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* Some constness and signedness.

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* Connect new routes to existing routes.

* RERR bad destinations not bad nexthops.
This commit is contained in:
bg- 2007-04-05 12:09:32 +00:00
parent 0b4a7e1c3d
commit e486c95da2
1 changed files with 18 additions and 13 deletions
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31
core/net/uaodv.c
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@ -28,7 +28,7 @@
* *
* This file is part of the Contiki operating system. * This file is part of the Contiki operating system.
* *
* $Id: uaodv.c,v 1.5 2007/04/04 12:12:39 bg- Exp $ * $Id: uaodv.c,v 1.6 2007/04/05 12:09:32 bg- Exp $
*/ */
/** /**
@ -77,14 +77,14 @@ static struct {
} fwcache[NFWCACHE]; } fwcache[NFWCACHE];
static inline int static inline int
fwc_lookup(uip_ipaddr_t *orig, u32_t *id) fwc_lookup(const uip_ipaddr_t *orig, const u32_t *id)
{ {
unsigned n = (orig->u8[2] + orig->u8[3]) % NFWCACHE; unsigned n = (orig->u8[2] + orig->u8[3]) % NFWCACHE;
return fwcache[n].id == *id && uip_ipaddr_cmp(&fwcache[n].orig, orig); return fwcache[n].id == *id && uip_ipaddr_cmp(&fwcache[n].orig, orig);
} }
static inline void static inline void
fwc_add(uip_ipaddr_t *orig, u32_t *id) fwc_add(const uip_ipaddr_t *orig, const u32_t *id)
{ {
unsigned n = orig->u8[3] % NFWCACHE; unsigned n = orig->u8[3] % NFWCACHE;
fwcache[n].id = *id; fwcache[n].id = *id;
@ -190,7 +190,7 @@ handle_incoming_rreq(void)
{ {
struct uaodv_msg_rreq *rm = (struct uaodv_msg_rreq *)uip_appdata; struct uaodv_msg_rreq *rm = (struct uaodv_msg_rreq *)uip_appdata;
uip_ipaddr_t dest_addr, orig_addr; uip_ipaddr_t dest_addr, orig_addr;
struct uaodv_rt_entry *rt; struct uaodv_rt_entry *rt, *fw = NULL;
#ifdef CC2420_RADIO #ifdef CC2420_RADIO
if(cc2420_last_rssi <= -38 || cc2420_last_correlation < 100) { if(cc2420_last_rssi <= -38 || cc2420_last_correlation < 100) {
@ -232,18 +232,23 @@ handle_incoming_rreq(void)
rm->hop_count, ntohl(rm->orig_seqno)); rm->hop_count, ntohl(rm->orig_seqno));
} }
/* Check if it is for our address. */ /* Check if it is for our address or an existing route. */
if(uip_ipaddr_cmp(&rm->dest_addr, &uip_hostaddr)) { if(uip_ipaddr_cmp(&rm->dest_addr, &uip_hostaddr)
|| (fw = uaodv_rt_lookup(&rm->dest_addr)) != NULL) {
print_debug("RREQ for our address! rt=%p\n", rt); print_debug("RREQ for our address! rt=%p\n", rt);
/* Send an RREP back to the source of the RREQ. */ /* Send an RREP back to the source of the RREQ. */
uip_ipaddr_copy(&dest_addr, &rm->dest_addr); uip_ipaddr_copy(&dest_addr, &rm->dest_addr);
uip_ipaddr_copy(&orig_addr, &rm->orig_addr); uip_ipaddr_copy(&orig_addr, &rm->orig_addr);
rreq_seqno++; /* XXX Not really always. */
#ifdef CC2420_RADIO #ifdef CC2420_RADIO
if(cc2420_check_remote(rt->nexthop.u16[1]) == REMOTE_MAYBE) if(cc2420_check_remote(rt->nexthop.u16[1]) == REMOTE_MAYBE)
cc2420_recv_ok(&rt->nexthop); cc2420_recv_ok(&rt->nexthop);
#endif #endif
send_rrep(&dest_addr, &rt->nexthop, &orig_addr, rreq_seqno); if(fw != NULL) /* Existing route. */
send_rrep(&dest_addr, &rt->nexthop, &orig_addr, fw->seqno);
else {
rreq_seqno++; /* XXX Not really always. */
send_rrep(&dest_addr, &rt->nexthop, &orig_addr, rreq_seqno);
}
} else { } else {
print_debug("RREQ for %d.%d.%d.%d orig %d.%d.%d.%d ttl=%d\n", print_debug("RREQ for %d.%d.%d.%d orig %d.%d.%d.%d ttl=%d\n",
uip_ipaddr_to_quad(&rm->dest_addr), uip_ipaddr_to_quad(&rm->dest_addr),
@ -321,7 +326,7 @@ handle_incoming_rerr(void)
struct uaodv_msg_rerr *rm = (struct uaodv_msg_rerr *)uip_appdata; struct uaodv_msg_rerr *rm = (struct uaodv_msg_rerr *)uip_appdata;
struct uaodv_rt_entry *rt; struct uaodv_rt_entry *rt;
print_debug("RERR received from %d.%d.%d.%d route to %d.%d.%d.%d seq=%ld\n", print_debug("RERR received from %d.%d.%d.%d route to %d.%d.%d.%d seq=%lu\n",
uip_ipaddr_to_quad(uip_udp_sender()), uip_ipaddr_to_quad(uip_udp_sender()),
uip_ipaddr_to_quad(&rm->unreach[0].addr), uip_ipaddr_to_quad(&rm->unreach[0].addr),
ntohl(rm->unreach[0].seqno)); ntohl(rm->unreach[0].seqno));
@ -368,13 +373,13 @@ static enum {
} command; } command;
#ifdef UAODV_BAD_ROUTE #ifdef UAODV_BAD_ROUTE
static uip_ipaddr_t bad_nexthop; static uip_ipaddr_t bad_dest;
u32_t bad_seqno; /* In network byte order! */ static u32_t bad_seqno; /* In network byte order! */
void void
uaodv_bad_route(struct uaodv_rt_entry *rt) uaodv_bad_route(struct uaodv_rt_entry *rt)
{ {
uip_ipaddr_copy(&bad_nexthop, &rt->nexthop); uip_ipaddr_copy(&bad_dest, &rt->dest);
bad_seqno = htonl(rt->seqno); bad_seqno = htonl(rt->seqno);
command = COMMAND_SEND_RERR; command = COMMAND_SEND_RERR;
process_post(&uaodv_process, PROCESS_EVENT_MSG, NULL); process_post(&uaodv_process, PROCESS_EVENT_MSG, NULL);
@ -438,7 +443,7 @@ PROCESS_THREAD(uaodv_process, ev, data)
send_rreq(&rreq_addr); send_rreq(&rreq_addr);
#ifdef UAODV_BAD_ROUTE #ifdef UAODV_BAD_ROUTE
else if (command == COMMAND_SEND_RERR) else if (command == COMMAND_SEND_RERR)
send_rerr(&bad_nexthop, &bad_seqno); send_rerr(&bad_dest, &bad_seqno);
#endif #endif
command = COMMAND_NONE; command = COMMAND_NONE;
continue; continue;